Illinois records
Common Garter Snake in Illinois
HarmlessThamnophis sirtalis
Yes. The Common Garter Snake has been recorded in 94 Illinois counties. It is non-venomous (harmless). Slender body with three light stripes running the length of a darker back.
Illinois counties with Common Garter Snake records
94 listed- Cook
- Lake
- Dupage
- Winnebago
- Will
- Kane
- McHenry
- Sangamon
- Saint Clair
- Johnson
- Champaign
- Peoria
- Madison
- Coles
- Piatt
- Jackson
- De Kalb
- Union
- Boone
- Richland
- Kankakee
- Grundy
- Mason
- Fulton
- Pulaski
- Lee
- La Salle
- Lake Michigan
- Putnam
- Woodford
- Ogle
- De Witt
- Vermilion
- Iroquois
- Alexander
- Jersey
- Monroe
- McLean
- Williamson
- Rock Island
- Macon
- Tazewell
- Fayette
- Morgan
- Jo Daviess
- Jasper
- Henderson
- Clinton
- Whiteside
- Wabash
- Carroll
- Randolph
- Bureau
- McDonough
- Christian
- Cass
- Macoupin
- Kendall
- Clark
- Shelby
- Schuyler
- Pope
- Massac
- Edgar
- Adams
- Calhoun
- Perry
- Mercer
- Jefferson
- Henry
- Ford
- Crawford
- Saline
- Moultrie
- Marshall
- Marion
- Lawrence
- Knox
- Hancock
- Hamilton
- Franklin
- Effingham
- White
- Wayne
- Warren
- Stephenson
- Pike
- Montgomery
- Menard
- Brown
- Bond
- Gallatin
- Douglas
- Clay
See the full Common Garter Snake profile or all snakes in Illinois.